Method and system for identifying a peripheral device by a high priority device-specific notification handler
US7506083B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2006 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Sep 18, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/385
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Method and system for latency-independent peripheral device identification. The computer system receives an interrupt from a peripheral device via a communications port. In response, an interrupt notification message is posted to alert a notification handler, and compliant peripheral class is determined. The voltage on a device may sense pin of the communications port for this determination. If the interrupt is indicative of the compliant peripheral class and the communications port is inactive, the port is opened, and an inquiry is sent and a response is received. If a response is received within a predetermined time period, an identification notification message is posted based on the response including information for classifying the peripheral device, so that a software handler registered with the operating system can handle the identification notification message when the software handler receives it. Thus, no time-critical interrupt response requirement is imposed for its successful operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.